20740860

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:118

約数の個数: 240

約数和(自身を含む): 78059520

約数和(自身を除く): 57318660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 54, 59, 60, 62, 63, 70, 81, 84, 90, 93, 105, 108, 118, 124, 126, 135, 140, 155, 162, 177, 180, 186, 189, 210, 217, 236, 252, 270, 279, 295, 310, 315, 324, 354, 372, 378, 405, 413, 420, 434, 465, 531, 540, 558, 567, 590, 620, 630, 651, 708, 756, 810, 826, 837, 868, 885, 930, 945, 1062, 1085, 1116, 1134, 1180, 1239, 1260, 1302, 1395, 1593, 1620, 1652, 1674, 1770, 1829, 1860, 1890, 1953, 2065, 2124, 2170, 2268, 2478, 2511, 2604, 2655, 2790, 2835, 3186, 3255, 3348, 3540, 3658, 3717, 3780, 3906, 4130, 4185, 4340, 4779, 4956, 5022, 5310, 5487, 5580, 5670, 5859, 6195, 6372, 6510, 7316, 7434, 7812, 7965, 8260, 8370, 9145, 9558, 9765, 10044, 10620, 10974, 11151, 11340, 11718, 12390, 12555, 12803, 13020, 14868, 15930, 16461, 16740, 17577, 18290, 18585, 19116, 19530, 21948, 22302, 23436, 23895, 24780, 25110, 25606, 27435, 29295, 31860, 32922, 33453, 35154, 36580, 37170, 38409, 39060, 44604, 47790, 49383, 50220, 51212, 54870, 55755, 58590, 64015, 65844, 66906, 70308, 74340, 76818, 82305, 87885, 95580, 98766, 109740, 111510, 115227, 117180, 128030, 133812, 148149, 153636, 164610, 167265, 175770, 192045, 197532, 223020, 230454, 246915, 256060, 296298, 329220, 334530, 345681, 351540, 384090, 460908, 493830, 576135, 592596, 669060, 691362, 740745, 768180, 987660, 1037043, 1152270, 1382724, 1481490, 1728405, 2074086, 2304540, 2962980, 3456810, 4148172, 5185215, 6913620, 10370430, 20740860]

約数ペア:

[(1, 20740860), (2, 10370430), (3, 6913620), (4, 5185215), (5, 4148172), (6, 3456810), (7, 2962980), (9, 2304540), (10, 2074086), (12, 1728405), (14, 1481490), (15, 1382724), (18, 1152270), (20, 1037043), (21, 987660), (27, 768180), (28, 740745), (30, 691362), (31, 669060), (35, 592596), (36, 576135), (42, 493830), (45, 460908), (54, 384090), (59, 351540), (60, 345681), (62, 334530), (63, 329220), (70, 296298), (81, 256060), (84, 246915), (90, 230454), (93, 223020), (105, 197532), (108, 192045), (118, 175770), (124, 167265), (126, 164610), (135, 153636), (140, 148149), (155, 133812), (162, 128030), (177, 117180), (180, 115227), (186, 111510), (189, 109740), (210, 98766), (217, 95580), (236, 87885), (252, 82305), (270, 76818), (279, 74340), (295, 70308), (310, 66906), (315, 65844), (324, 64015), (354, 58590), (372, 55755), (378, 54870), (405, 51212), (413, 50220), (420, 49383), (434, 47790), (465, 44604), (531, 39060), (540, 38409), (558, 37170), (567, 36580), (590, 35154), (620, 33453), (630, 32922), (651, 31860), (708, 29295), (756, 27435), (810, 25606), (826, 25110), (837, 24780), (868, 23895), (885, 23436), (930, 22302), (945, 21948), (1062, 19530), (1085, 19116), (1116, 18585), (1134, 18290), (1180, 17577), (1239, 16740), (1260, 16461), (1302, 15930), (1395, 14868), (1593, 13020), (1620, 12803), (1652, 12555), (1674, 12390), (1770, 11718), (1829, 11340), (1860, 11151), (1890, 10974), (1953, 10620), (2065, 10044), (2124, 9765), (2170, 9558), (2268, 9145), (2478, 8370), (2511, 8260), (2604, 7965), (2655, 7812), (2790, 7434), (2835, 7316), (3186, 6510), (3255, 6372), (3348, 6195), (3540, 5859), (3658, 5670), (3717, 5580), (3780, 5487), (3906, 5310), (4130, 5022), (4185, 4956), (4340, 4779)]